Complete with a wine cellar, indoor swimming pool and landscaped walled garden it sounds like a great place to work from home on your next novel - and a far cry from their current £350,000 terraced house.

The success of 50 Shades Of Grey has outstripped even The Da Vinci Code by Dan Brown and the Harry Potter series, selling faster in its first 11 weeks on sale than both of these previous publishing sensations.